摘要
[目的]建立远志合理的耕作制度,筛选远志最佳的轮作作物.[方法]选取8种远志产地常种作物,研究不同作物土壤水浸提液对远志种子萌发及幼苗生长的影响.[结果]不同作物土壤水浸提液对远志种子萌发均有抑制作用,浸提液浓度越大,抑制作用越强,平均总抑制率从小到大依次是大豆、谷子、玉米、小麦、高粱、蓖麻、油葵、芝麻.不同作物土壤水浸提液对远志幼苗的生长大部分出现了促进作用,各处理浓度间相比表现为随着浓度的增大幼苗及根生长逐渐受到抑制.各处理远志幼苗和根的生长整体呈负相关;蓖麻、芝麻处理,远志苗高、根短;大豆、玉米和谷子处理,远志根长、苗低、生长差.大豆、玉米、小麦、高粱和谷子处理的根长和根重高于CK.远志幼苗POD活性除芝麻和蓖麻外均随着浓度的增大而增强,MDA含量整体呈现随着浓度的增大而增加的趋势,SOD活性则随着浸提液浓度的增大先增加后降低.[结论]综合生长指标和生理指标,大豆、玉米、小麦和谷子是比较适合远志的轮作作物.
Abstract
[Objective]To establish a reasonable farming system and find suitable rotation crops for Polygala tenuifolia.[Method]This study selected eight common crops to study the effects of soil water extracts of different crops on seed germination and seedling growth of Polygala tenuifolia.[Result]The soil water extracts of different crops had inhibitory effects on the germination of Polygala tenuifolia seeds.The higher the concentration of the extract,the stronger the inhibitory effect.The average total inhibition rate from small to large was soybean,millet,corn,wheat,sorghum,castor,oil sunflower and sesame.The soil water extracts of different crops had a promoting effect on the growth of Polygala tenuifolia seedlings.The growth of seedlings and roots was gradually inhibited as the concentration increased compared to other treatments.The overall growth of seedlings and roots of Polygala tenuifolia in each treatment showed a negative correlation;castor,sesame treatment,Polygala tenuifolia had tall seedlings and short roots;soybeans,corn and millet treatment,Polygala tenuifolia had long roots,low seedlings and poor growth.The root length and root weight of soybean,corn,wheat,sorghum and millet treatments were higher than those of CK.The POD activity of Polygala tenuifolia seedlings,except for sesame and castor,increased with the increase of concentration.The overall MDA content showed an in-creasing trend with the increase of concentration,while the SOD activity first increased and then decreased with the increase of extract concen-tration.[Conclusion]Based on the comprehensive growth index and physiological index,soybean,corn,wheat and millet are more suitable rota-tion crops for Polygala tenuifolia.
国家科技期刊平台
NSTL
万方数据